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Journal Articles IEEE Transactions on Microwave Theory and Techniques Year : 2009

A New Approach to Canonical Dual-Mode Cavity Filter Design

Abstract

This paper presents a new approach to the design of canonical dual-mode cavity filters within representation theory. Instead of the folded canonical coupling matrix, which results from using the resonances of the empty cavities as a basis, a representation based on the resonances of the cavities with all perturbations present is used. The resulting coupling matrix takes the form of a cul-de-sac configuration. For canonical dual-mode filters with a symmetric response, it allows direct design of the entire structure, except of the input cavity that requires optimization. A sixth-order filter with two symmetrically located transmission zeros is presented to document the validity of the approach. A sixth-order filter with two transmission zeros above the passband is also presented.
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Dates and versions

hal-00663525 , version 1 (27-01-2012)

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Cite

Maged Bekheit, Smain Amari, Fabien Seyfert. A New Approach to Canonical Dual-Mode Cavity Filter Design. IEEE Transactions on Microwave Theory and Techniques, 2009, 57 (5), pp.1196 -1206. ⟨10.1109/TMTT.2009.2017362⟩. ⟨hal-00663525⟩

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